Slack-twisted-yarn preventive



l F. BLEDSOE ET AL SLACK TWISTED YARN PREVENTIVE June 17, 1924. 1,498,012

Filed July 2, 1923 I I 1 I Q I Enuewtoy w IafqgmEBZed50&

' IveyBJl Lbrms Patented June 17, 19247 UNITED STATES PATENT QEFIQ'E,

parnyn'rrn' r. stepson ann vnv Bi MORRIS, or LanonaL ALABAMA.

sLAcK-rwIsrEn-Yimu REvENTWE.

Application filed July 2, -1923.' Serial No. 648,008.

To all whom it may concern:

Be it: known that we, LAFAYETTEF. BLED- SOE and IVEY 13. Momus, citizens of the United States, residing at Langdale, in the county of Chambers and State of Alabama, have invented certain new and useful Improvements in Slack-Twisted-Yarn Preventives, of which the following is a-specification. i

The present invention relates to textile machinery, and more especially to spinning and twister frames; 7

One object of the invention is to provide a device, to be associated with such frames, that will prevent all looseness of the driving band.

Another object is to provide such a device which will keep the driving band under yieldable tension so that it will at all timesbe sufficiently tight to perform efliciently in operation.

A further object is to provide such a device which can readily be incorporated into spinning and twister frames now in use, and without the necessity of removing parts of the frame.

A still further object of the invention is to provide an arrangement of the driving band so that it will drive a larger number of spindles than have hitherto been customar'y.

Another and important object of the present invention is to provide a device which, by acting on the'driving band, will eliminate practically all of the slack twisted yarn, make the yarn more uniform and eliminate a large part of the friction on the spindles.

Other objects and advantages will appear from the following description, taken. in connection with the accompanying drawings, which illustrate a preferred form of the invention. Various changes and modifications will occur to those skilled in the art, and the drawings are not to be construed as a definition of the limits of the invention, reference being had to the accompanying claims for that purpose.

In the drawings,

Figure 1 is a side elevation, partly in sec tion, of a ring spinning or ring twister frame embodying the present invention.

Fig. 2 is a top plan fragmentary diagrammatic view illustrating a preferred arrangement of the runs of the driving band.

Referring more in detail to said drawings, and especially to Fig. 1, the numeral 1 designates generally a straight or usual form of twister frame, provided with the driving cylinder 2 and the opposed spindle whorls 3. Disposed below said whorls are the usual spindle ladders 4, provided as shown, with a horizontal portion and usual upstanding flangefi. The drivingbandG passes around the driving cylinder-2, thence around four of said spindle whorls 3 and hasa depending run {7, the purpose and function of which will now bedescribed. j In order to provide for-the efficient driving of four of said spindle whorls by the same driving band and in order to eliminate practically all slack twisted yarn and keep the driving band under a suflicient and yieldable tension the following means are employed.

A clamp block 8 is provided on its underside with a groove adapted to receive the upstanding flange 5 on the spindle ladder. The block 8 is provided with any suitable clamping means, shown in the drawings in the form of a set screw 9, for clamping the block in its desired position upon the spindle ladder. A projection 10 extends from one side of the block 8 and is provided with a substantially horizontally arranged stud shaft 11 extending sideways upon one side of said projection. Pivotally secured to said stud shaft 11 is the arm 12 which carries at its outer end thetension pulley 13.

The tension pulley 13 is mounted to revolve upon a short shaft 14 carried by said arm 12 and is preferably grooved about its circumference to receive the driving band 7.

The tension pulle 13 is preferably made of some relatively eavy material in order that by its weight, it may affect the tension upon the driving band, maintaining said band at substantially the same yieldable tension.

It will be seen that by providing such tension upon the driving band 7 the same band may be satisfactorily and sufficiently used to drive four spindle whorls. As it has been generally customary to use the driving band to drive not more than two spindle whorls the above described arrangement makes it possible to use one-half the usual number of driving bands.

It will further be seen that by maintaining a proper tension upon the driving band largely by the stud shafts is eliminated,

The tension pulley and its co-operating parts may, due to their construction, be applied and fixed in position, at any point along the spindle ladder without removing or even temporarily altering any portion whatever of the twister frame.

I claim: 7 g

1. In a spinning or twister frame, a driving cylinder, spindle whorls, a driving hand between said spindle and whorls, a spindle ladder, and a slack-twisted yarn preventive forfsaid frame comprising a grooved clamp provided with a set screw and adapted to receive the spindle ladder in said groove and clamp it therein, an arm pivotally secured to said clamp for movement in a sub- 1,49s,o12 V stantially vertical plane, and an idlepulley rotatably secured to said arm and associated with said driving band.

2. In a spinning or twister frame having a spindle ladder, driving mechanism compr1s1ng a drlvlng cylinder, a plurality of spindle whorls, and a series of driving bands each passing around said cylinder and four of said spindle whorls, a clamp secured to said spindle ladder, an arm pivotally secured to said clamp and a Weighted idle pulley associated with said arm and hearing on a run of said band which passes around said driving cylinder whereby the entire weight of the pulley isupon the loop of the band, and little or no weight is upon the clamp.

In testimony whereof natures.

LAFAYETTE F. BLEDSOE. IVEY B. MORRIS.

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